I have some more information on White General Michael K Diterikhs who did play a role in the investigation of the murder of the Imperial Family. This supplements what is found on his wiki bio:
He was of German ancestry. He saw service in Turkistan and the Russo-Japanese war. During WW I at first he was chief of staff of the Russian 3rd army, then he was Quartermaster General (Operations officer) of the South-West front In March of 1916 he was given command of a Russian Infantry Brigade that fought in Salonika. After the February 1917 revolution he was back in Russia and was the Quartermaster general at Stala to general Dukhonin the last Commander of the Russian Imperial army. Diterikhs managed to escape when Dukhonin was murdered by the Red Guards and for awhile he worked as a day laborer. In 1918 he linked up with the Czech Legion in Siberia and in part since he had met some of their leaders earlier in WW I they made him the Chief of Staff to their Commander. In July 1918 they capture Vladivostok. In November 1918 he left the Czechs and joined the White army. Inspite of the fact he was one of the better Generals in the White army he was put in charge of overseeing the investigation of the murder investigation of the Imperial Family in Ekaterinburg from January to June 1919. In July 1918 he was finally given a command at the front of the White Siberian army. In command he advised the White armies to stand on the defense. Sadly the Chief of Staff of the White armies in Siberia General Lebedev ordered an attack at Cheliabinsk that was a failure. On 9 August 1919 Diterkhs replaced him as Chief of Staff. By this time according to another White Leader the effects of war and revolution "had deeply shaken the balance of his mind" and this period the White leadership was in the phase of what one White leader called "Unplanning". In spite of only having only 50-60,000 men at the front Diterikhs decided to launch an offensive against the larger Red armies. This offensive called the Ishim-Tobol or Tobolsk offensive in September did recapture Tobolsk and 17,000 prisoners but it was done at heavy cost to the White army which could not replace its losses. In October the Red armies attacked and the White Armies or what was left of them were routed. Diterikhs wanted to abandon the White capitol at Omsk and retreat to a more suitable defense position. The White leader Admiral Kolchak at first agreed then ordered Omsk to be defended. Diterikhs got into a rage over this and resigned on 4 November 1919. The order to withdraw from Omsk which was impossible to defend too late to carry out a planned withdrawl. Result the White forces and large numbers of refugees fled in a panic which led to the disintegration of what was left of the White forces. After Kolchak was captured and shot by the reds Diterichs became the leader of what was left of the White forces in Japanese occupied Siberia. When they withdrew he went with them. He settled in Shanghai China where he worker at first as a bank teller and then a cobbler until he died in 1937.
He was a religious fanatic, even when he went through the General staff academy he went through bouts of religiosity and mysticism. He was also a reactionary monarchist and extreme anti-Semite.
